High-level ElastiCache Redis cluster builder following AWS best practices. **Default Settings:** - Engine = Redis 7.0 - Node type = cache.t3.micro (free tier eligible) - Number of nodes = 1 (single node for dev) - Port = 6379 (Redis default) - Automatic failover = disabled (single node) - Encryption at rest = enabled - Encryption in transit = enabled **Rationale:** These defaults follow AWS Well-Architected Framework: - Redis 7.0 provides latest features and security - T3.micro suitable for development and testing - Encryption enabled by default for security - Single node reduces costs for non-production **Use Cases:** - Session storage - Application caching - Real-time analytics - Leaderboards and counters **Escape Hatch:** Access the underlying CDK CfnCacheCluster via the `CacheCluster` property for advanced scenarios not covered by this builder.